Don't simply ask how much I charge for
This is an important question, but I'm afraid there isn't a 'one size fits all' answer. Costs can vary depending on the complexity of the work involved and nature of the project. The best solution would be to send me your details, along with a description of your project and budget you have available.
Do give me an indication of how much you have to spend
Knowing a budget up front helps give a clear indication of how much time can be spent on a project, and subsequently how much work I can fit into the time quota. A budget figure also gives an insight into roughly how large the client is expecting the project to be.
Don't ask how many revisions are included in the cost
I always create designs with reasoning behind the graphics, therefore I don't tend to work on a revision basis. If a change needs to be made that's not a problem, if I feel differently I'll always offer my view, but as long as it fits within the proposed time quota it's no trouble. However if the change creates additional work beyond the initial budget, advice will be given on any additional costs.
Do realise there's a deposit required
I work on a 50% deposit basis, where an initial invoice is generated to start up a project. Once all work is completed, the invoice for the remaining balance is created then files are supplied by email. Payments can be made by PayPal, cheque or bank transfer and are charged in either Canadian/US Dollars, or Euros, depending on the client's location.